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CC85XX-DK Evaluation Board not functional

Hello!
I opened the CC85XXDK (Rev. 1.2.1) box yesterday and started working as per the 'Quick Start Guide' (swru252a).

I powered both the Audio Evaluation Boards using the mini USB port. Blue LED D3 glows. But the transceiver boards do not pair. The green LED (D9) on one of the EBs doesn't flash as expected when an RF SoC is mounted.  

Even the CC Debugger fails to identify the SoC EM when attached to this board, while it identifies both the EMs when attached to the other board. 

After trying all combinations, I figured that the the CC85XX-EMs are working fine and the problem must lie with the Audio EB. 

The firmware on the faulty board was version 41, but i updated it to 43 using SmartRF studio. 
Faulty board id: 1042005342; Order Number: 338239

Request help asap. My project deadline is 2 weeks away. 

-Pratheek